12.10.0 (2 2016-08) TECHNICAL SPECIFICATION ION Universal Mobile Tel elecommunications System ( (UMTS); LTE; Internet Protocol (IP) mu ultimedia call control protoco col based on Session n Initiation Prot ocol (SIP) and Session n Description Protocol (SDP) P); ; User Equipment ( t (UE) conformance specificat cation; Part 1: Protoco col conformance specificatio tion (3GPP TS 34.229 29-1 version 12.10.0 Release e 12) --`,``,``,``,,```````,``,-`-``,```,,,`--- European Telec